Novel electric oil delivery pump special for unmanned aerial vehicle

Abstract

A barrel-shaped shell is composed of a motor shell and a controller shell, the controller shell is connected to the rear end of the motor shell through threads, a controller is installed in the controller shell, a brushless motor is installed in the motor shell, a lead sealing structure is arranged at the rear end of the motor shell, and the motor shell is connected with the controller shell through threads. The gear pump is connected to the front end of the motor shell through threads and composed of a pump cover and a pump body which are fixedly connected through screws, a gear is arranged between the pump cover and the pump body and arranged at the output end of the brushless motor and a driving shaft of an oil inlet formed in the pump cover, and an oil inlet and an oil outlet are formed in the top of the pump cover. According to the utility model, a lead sealing structure is used, and the lead sealing structure and a motor mounting shell are of a one-position structure, so that a middle lead can be insulated and sealed with the shell, the assembly efficiency of a product is improved, and the anti-interference performance is improved; the oil inlet and the oil outlet adopt soft quick-change connectors; the oil pipe is convenient and reliable to mount; and the heat dissipation performance of the brushless motor and the performance of the pump body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumps, in particular to a new type of electric oil pump dedicated to unmanned aerial vehicles. Background Art

[0002] At present, the UAV oil delivery system mostly uses mechanical pumps or electric pumps for fuel delivery. Mechanical pumps have the advantages of simple structure and high reliability, but they are insufficient in high-precision flow control, energy saving and consumption reduction, etc. Electric pumps have higher flexibility and controllability, can achieve precise flow control and low energy consumption, but have higher requirements for their working stability and reliability. Most of the existing UAV-specific electric oil pumps have complex structures, are difficult to assemble, and have poor motor heat dissipation capabilities, resulting in insufficient reliability and stability of the device during operation. At the same time, the ability to resist external electromagnetic interference is also the key to the working stability of the electric oil pump. Generally, electric oil pumps improve the product's anti-electromagnetic interference index by installing inductors and capacitors inside the oil pump to filter interfering electromagnetic waves. However, the reliability of electronic components such as inductors and capacitors working in oil for a long time is easily affected, which affects the reliability and stability of the electric oil pump. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a new type of electric oil pump specially used for UAVs. Insulating oil is poured into the motor housing, and a lead sealing structure is provided at the connecting end of the motor housing and the controller housing. The lead sealing structure is integrated with the motor housing to make the structure simpler and the parts lighter, thereby improving the heat dissipation of the brushless motor and the working performance and reliability of the electric oil pump specially used for UAVs.

[0004] The utility model is realized by the following technical solutions:

[0005] A novel electric oil pump specially used for unmanned aerial vehicles comprises a barrel-shaped shell, and also comprises a brushless motor and a controller arranged in the barrel-shaped shell. The barrel-shaped shell is composed of a motor shell and a controller shell. The brushless motor is fixedly arranged in a groove in the motor shell. The controller is arranged in the controller shell. A lead sealing structure is provided at the connecting end of the motor shell and the controller shell. The lead sealing structure is composed of a pressing plate, a sealing assembly, and a lead limiting groove. The pressing plate and the lead limiting groove are sequentially arranged from the connecting end to the inside of the motor shell. One end of the lead is connected to the control signal output end of the controller, and the other end passes through the hole provided by the pressing plate and the motor shell to enter the lead limiting groove. After being led out, it is connected to the control circuit of the brushless motor. The sealing assembly is sleeved on the lead, and the controller is fixedly connected to the pressing plate.

[0006] Furthermore, the pressing plate is provided with holes, which are controller holes, lead holes and limit rod holes.

[0007] Furthermore, the controller hole is arranged at the center of the pressure plate, the lead hole is arranged near one side edge of the pressure plate, and the limit rod hole is arranged around the controller hole.

[0008] Furthermore, a controller fixing member provided on the controller penetrates into the controller hole and is fixedly connected to the pressing plate.

[0009] Furthermore, the pressure plate is fixedly connected to the motor housing through a limiting rod passing through the limiting rod hole.

[0010] Furthermore, the sealing component located between the pressing plate and the lead wire limiting groove is installed in the step hole provided in the motor housing and passes through the lead wire hole.

[0011] Furthermore, the sealing component uses an insulating material.

[0012] Furthermore, the lead wire is arranged in the plug pin, and the plug pin outer sleeve is provided with a sealing component.

[0013] Furthermore, the motor housing is filled with insulating oil.

[0014] Compared with the prior art, the utility model has the following obvious advantages:

[0015] 1. The utility model adopts a sealing assembly, a pressure plate and a lead limit groove sealing combined lead sealing structure to insulate and seal the intermediate lead from the shell, reduce the external electromagnetic interference of the controller transmission signal, and improve the sealing and stability of the UAV-specific electric oil pump.

[0016] 2. Since the lead sealing structure of the utility model is integrated with the motor housing, the structure of the electric oil pump for UAV is simpler, the components are more compact and lighter, and the assembly efficiency and working reliability of the electric oil pump for UAV are improved.

[0017] 3. In the utility model, since insulating oil is poured into the motor housing, when the electric oil pump for UAV is working, the brushless motor runs in the insulating oil. The insulating oil can better assist the brushless motor in heat dissipation, thereby improving the working performance and reliability of the electric oil pump for UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of each component of the utility model.

[0020] The relationship between the reference numerals and the corresponding names is as follows:

[0021] 1. Pump cover, 101. Screws, 102. Gear limit rod, 103. Oil inlet, 104. Oil outlet, 2. Pump body, 201. Driving gear, 202. Driven gear, 3. Motor housing, 301. Motor fixing part, 4. Brushless motor, 5. Controller housing, 501. Line collector, 6. Controller, 601. Controller fixing part, 7. Pressure plate, 701. Controller hole, 702. Lead hole, 703. Limit rod hole, 704. Limit rod, 8. Sealing assembly, 9. Pin, 10. Lead limit groove. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1 , Figure 2 As shown, the utility model provides a novel electric oil pump dedicated to unmanned aerial vehicles, including a gear pump, a brushless motor 4, a controller 6, and a barrel-shaped shell; in this embodiment, the bottom of the gear pump is connected to the top of the barrel-shaped shell by a thread, and is composed of a pump cover 1 and a pump body 2, which are fixedly connected using screws 101, and the pump cover 1 is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet include an oil inlet 103 and an oil outlet 104, and the oil inlet and the oil outlet adopt a soft quick-change joint, and a gear is provided between the pump cover 1 and the pump body 2, and the gear includes a driving gear 201 and a driven gear 202, and the driving gear 201 is arranged at the output end of the brushless motor, and the driven gear 202 is arranged on the gear limiting rod 102 arranged on the pump cover, and the gear teeth of the driving gear 201 and the driven gear 202 are meshed.

[0024] The barrel-shaped shell is composed of a motor shell 3 and a controller shell 5. The controller shell 5 is connected to the motor shell 3 through a thread. The brushless motor 4 is installed in the motor shell 3. The top of the brushless motor 4 fits in the groove set at the bottom of the pump body 2. The output end of the top of the brushless motor 4 passes through the hole set at the bottom of the pump body 2. The bottom of the brushless motor 4 fits in the groove set in the motor shell 3, and the bottom of the brushless motor 4 is fixedly connected to the motor fixing part 301 set in the motor shell 3. The brushless motor 4 is immersed in the insulating oil in the motor shell 3. The controller 6 is installed in the controller shell 5. The control signal input line of the controller 6 is converged to the outside of the shell through the line collector 501 set in the controller shell 5.

[0025] A lead sealing structure is provided at the connection end between the motor housing 3 and the controller housing 5. The lead sealing structure is composed of a sealing component 8, a pressure plate 7 and a lead limiting groove 10. The pressure plate 7 and the lead limiting groove 10 are sequentially arranged from the connection end to the motor housing 3. One end of the lead is connected to the control signal output end of the controller 6, and the other end passes through the hole set by the pressure plate 7 and the motor housing 3 to enter the lead limiting groove 10. After being led out, it is connected to the control circuit of the brushless motor 4. The sealing component 8 is sleeved on the lead, and the controller 6 is fixedly connected to the pressure plate 7; a hole is provided on the pressure plate 7, and the hole is for controlling The controller hole 701, the lead hole 702 and the limit rod hole 703, the controller hole 701 is arranged at the center of the pressure plate 7, the controller fixing part 601 provided by the controller 6 passes through the controller hole 701 and is fixedly connected to the pressure plate 7, the pressure plate 7 is fixedly connected to the motor housing 3 through the limit rod hole 703 via the limit rod 704, the sealing component 8 located between the pressure plate 7 and the lead limit groove 10 is installed in the step hole provided in the motor housing 3 and passes through the lead hole 702, the sealing component 8 uses an insulating material, the lead is arranged in the pin 9, and the pin 9 is covered with the sealing component 8.

[0026] When the utility model is used, the hose connected to the oil tank is connected to the oil inlet 103, and the hose connected to the oil delivery hole of the drone is connected to the oil outlet 104. After the power is turned on, the controller 6 provides kinetic energy and transmission commands to the brushless motor 4 through the lead in the lead sealing structure to control the operation of the brushless motor 4. The insulating oil poured into the motor housing 3 assists the brushless motor 4 in dissipating heat. The output end of the brushless motor 4 drives the driving gear 201 arranged on the top thereof to rotate, and the driving gear 201 simultaneously drives the meshing driven gear 202 to rotate, forming a low-pressure space in the oil inlet chamber, so that the fuel can be continuously sucked into the oil inlet 103 from the fuel tank. As the amount of fuel sucked increases, the fuel at the oil outlet is continuously compressed, and the fuel is pressed out from the oil outlet 104 to refuel the drone.

[0027] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A novel electric oil pump for unmanned aerial vehicles, comprising a barrel-shaped housing, and also comprising a brushless motor (4) and a controller (6) arranged in the barrel-shaped housing, wherein the barrel-shaped housing is composed of a motor housing (3) and a controller housing (5), wherein the brushless motor (4) is fixedly arranged in a groove in the motor housing (3), and the controller (6) is arranged in the controller housing (5), and wherein: A lead wire sealing structure is provided at the connection end between the motor housing (3) and the controller housing (5), and the lead wire sealing structure is composed of a pressure plate (7), a sealing component (8), and a lead wire limiting groove (10). The pressure plate (7) and the lead wire limiting groove (10) are sequentially arranged from the connection end to the inside of the motor housing (3). One end of the lead wire is connected to the control signal output end of the controller (6), and the other end passes through a hole provided in the pressure plate (7) and the motor housing (3) and enters the lead wire limiting groove (10). After being led out, it is connected to the control circuit of the brushless motor (4). The sealing component (8) is sleeved on the lead wire, and the controller (6) is fixedly connected to the pressure plate (7).

2. According to claim 1, a new type of UAV dedicated electric oil pump is characterized by: The pressing plate (7) is provided with holes, which are a controller hole (701), a lead hole (702) and a limit rod hole (703).

3. The novel electric oil pump for UAV according to claim 2 is characterized by: The controller hole (701) is arranged at the center of the pressing plate (7), the lead wire hole (702) is arranged at one side of the pressing plate (7), and the limit rod hole (703) is arranged around the controller hole (701).

4. A novel electric oil pump for drones according to claim 2 or 3, characterized in that: The controller fixing member (601) provided on the controller (6) penetrates into the controller hole (701) and is fixedly connected to the pressing plate (7).

5. A new type of electric oil pump for drones according to claim 2 or 3, characterized in that: The pressing plate (7) is fixedly connected to the motor housing (3) via a limiting rod (704) passing through the limiting rod hole (703).

6. The novel electric oil pump for UAV according to claim 1 is characterized by: The sealing assembly (8) located between the pressing plate (7) and the lead wire limiting groove (10) is installed in a stepped hole provided in the motor housing (3) and passes through the lead wire hole (702).

7. A novel electric oil pump for drones according to claim 1 or 6, characterized in that: The sealing component (8) is made of insulating material.

8. The novel electric oil pump for UAV according to claim 7 is characterized by: The lead wire is arranged in the plug pin (9), and the plug pin (9) is covered with a sealing component (8).

9. The novel electric oil pump for UAV according to claim 1 is characterized by: The motor housing (3) is filled with insulating oil.

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